Interference environment for radio astronomy in the shielded zone of the moon
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COSPAR radio astronomy↗
Engineering topics
Altunin, V.
Publications and source records attributed to Altunin, V..
Space VLBI Mission Operational Support at the NASA Deep Space Network
The first Space Very Long Baseline Interferometry (VLBI) mission VSOP has been successfully operated since 1997 and several follow-on missions are in development or under discussion.
DSN space VLBI VSOP mission operations↗
VLBI in the Deep Space Network: Challenges and Prospects
The purpose of this paper is to highlight the current status and prospects for VLBI in the NASA DSN.
VLBI↗
The DSN Radio Observatory and Asian Pacific VLBI Network
The current status of VLBI radio astronomy at the DSN is described. Recent upgrades of the radio astronomy and VLBI recording instrumentation will provide new capabilities.
radio astronomy↗
Astrometry VLBI in Space (AVS
A proposed new space radio astronomy mission for astrometry is described. The Astrometry VLBI (very long baseline) in Space (AVS) nominal mission includes two identical spacecraft, each with a 4-m antenna sending data to a 70-m ground station. The goals of AVS are improving astrometry accuracy to the microarcsecond level and improving the accuracy of the transformation between the inertial radio and optical coordinate reference frames.
astrometry very long baseline interferometry VLBI↗
VLBI DSN Current Status and Prospects
A review of the current status of very long baseline interferometry in the Deep Space Network.
evaluation VLBI scheduling procedures↗
Demonstration of a joint US-Russian very long baseline interferometry tracking capability
This article discusses results of the first very long baseline interferometric (VLBI) measurements between antennas of the NASA DSN and the Russian three-station spacecraft tracking network. The VLBI systems of the U.S. and Russian tracking networks are described, and their compatibility for joint U.S.-Russian measurements is discussed. The results of a series of VLBI measurements involving Deep Space Stations and Russian tracking antennas are presented. The purpose of these first observations is to establish the compatibility of the two VLBI recording systems and verify that data recorded on these systems can be successfully correlated. The delay and delay rate observables produced by correlation of the recorded data are then used to estimate the locations of the Russian tracking stations relative to the Deep Space Stations. These first experiments, carried out at 1.7 GHz, are precursors to a future series of observations at 2 and 8 GHz, which will provide far more accurate station location estimates. The capability of the VLBI systems for joint U.S.-Russian spacecraft navigation measurements is also discussed.
Kroger, P. M.↗